The Use of Nitinol Continuous Compression Implants in Orthopaedic Trauma.

Background: Continuous compression implants (CCIs) can provide continuous compression across a fracture site. They are mainly used in foot/ankle surgery, with very limited descriptions in the literature of their potential for trauma. The aim of this study was to describe the use and associated outcomes of CCIs in modern day trauma practice.

DAIR for periprosthetic joint infections-One week to save the joint?

Background: Predicting the success of a Debridement, Antibiotics, and Implant Retention (DAIR) procedure for periprosthetic joint infection (PJI) for hip and knee joint arthroplasty remains a challenge. A failed DAIR might adversely affect the outcome of any future revision surgery for PJI. Hence, the ability to identify and optimize factors predictive of DAIR success would help target the procedure to the appropriate patient cohort and avoid unnecessary surgery for patients where a DAIR is unlikely to eradicate infection.

Does size matter? Outcomes following revision total hip arthroplasty with long or primary stems: a systematic review and meta-analysis.

Background: Femoral reconstruction with long stems is widely accepted as the standard in revision total hip arthroplasty (rTHA). However, long stems can be technically challenging to insert and can compromise bone stock for future revision. This study aimed to identify whether there was a difference in outcomes with using a long versus primary or short femoral stem in revision.

Predictors of mortality in periprosthetic fractures of the hip: Results from the national PPF study.

Introduction: Periprosthetic fractures (PPFs) around the hip joint are increasing in prevalence. In this collaborative study, we aimed to investigate the impact of patient demographics, fracture characteristics, and modes of management on in-hospital mortality of PPFs involving the hip.

Methods: Using a multi-centre cohort study design, we retrospectively identified adults presenting with a PPF around the hip over a 10-year period.

SEEMS: A Single Event Effects and Muon Spectroscopy facility at the Spallation Neutron Source.

This study outlines a concept that would leverage the existing proton accelerator at the Spallation Neutron Source (SNS) of Oak Ridge National Laboratory to enable transformative science via one world-class facility serving two missions: Single Event Effects (SEE) and Muon Spectroscopy (μSR). The μSR portion would deliver the world's highest flux and highest resolution pulsed muon beams for material characterization purposes, with precision and capabilities well beyond comparable facilities. The SEE capabilities deliver neutron, proton, and muon beams for aerospace industries that are facing an impending challenge to certify equipment for safe and reliable behavior under bombardment from atmospheric radiation originating from cosmic and solar rays.

Treatment of supracondylar periprosthetic femoral fractures with retrograde intramedullary nailing versus distal femoral plating: A systematic review and meta-analysis of current evidence.

Background: Supracondylar periprosthetic fractures, when amenable to fixation, can be treated by either retrograde intramedullary nailing (RIMN) or plating. There is paucity of evidence regarding the superiority of one fixation method over the other. This review aims to determine which fixation method leads to better functional outcomes and perioperative complications.

Failure of dual plating in a complex open distal femur fracture as the result of major trauma.

A 61-year-old polytrauma patient was admitted with a right distal comminuted metaphyseal femoral fracture with intra-articular extension (Orthopaedic Trauma Association 33C2.3 classification) among other injuries. Due to the high degree of comminution and massive bone loss, this was initially managed with a dual plating open reduction internal fixation.

Modified DHAP regimen in the salvage treatment of refractory or relapsed lymphomas.

Background: The combination of dexamethasone, high-dose cytarabine, and cisplatin (DHAP) is an established salvage regimen for lymphoma patients. We hypothesized that a modified administration schedule for cisplatin and cytarabine results in lower toxicity and improved efficacy.

Methods: We retrospectively analysed 119 patients with relapsed or refractory, aggressive, or indolent B-cell lymphomas, mantle-cell lymphomas, peripheral T-cell lymphomas, or Hodgkin's lymphomas who were treated with the modified DHAP (mDHAP) regimen (dexamethasone 40 mg 15 min-i.

Conceptual moderator studies for the Spallation Neutron Source short-pulse second target station.

Candidate moderator configurations for a short-pulse second target station (STS) at the Oak Ridge National Laboratory Spallation Neutron Source (SNS) have been identified using a global optimizer framework built around the MCNPX particle transport code. Neutron brightness metrics were selected as the figure-of-merit. We assumed that STS would use one out of six proton pulses produced by an SNS accelerator upgraded to operate at 1.

Optimizing moderator dimensions for neutron scattering at the spallation neutron source.

In this work, we investigate the effect of neutron moderator dimensions on the performance of neutron scattering instruments at the Spallation Neutron Source (SNS). In a recent study of the planned second target station at the SNS facility, we have found that the dimensions of a moderator play a significant role in determining its surface brightness. A smaller moderator may be significantly brighter over a smaller viewing area.

Instrument performance study on the short and long pulse options of the second Spallation Neutron Source target station.

The Spallation Neutron Source (SNS) facility at the Oak Ridge National Laboratory is designed with an upgrade option for a future low repetition rate, long wavelength second target station. This second target station is intended to complement the scientific capabilities of the 1.4 MW, 60 Hz high power first target station.

Detecting cavitation in mercury exposed to a high-energy pulsed proton beam.

The Oak Ridge National Laboratory Spallation Neutron Source employs a high-energy pulsed proton beam incident on a mercury target to generate short bursts of neutrons. Absorption of the proton beam produces rapid heating of the mercury, resulting in the formation of acoustic shock waves and the nucleation of cavitation bubbles. The subsequent collapse of these cavitation bubbles promote erosion of the steel target walls.

New tension band material for fixation of transverse olecranon fractures: a biomechanical study.

This study tested the use of braided polyethylene cable as an option for repairing transverse olecranon fractures. Six cadaveric elbows underwent a transverse olecranon osteotomy followed by fixation with tension band constructs using 18-gauge wire and Secure-Strand (U.S.

The memory properties of cold-worked titanium rods in scoliosis constructs.

Study Design: Time series monitoring changes in titanium and stainless steel rod curvature kept at a constant temperature of 37 C as a function of time.

Objectives: To assess the possibility of loss of curvature in titanium rods after scoliosis surgery.

Summary Of Background Data: Titanium rods have gained use in scoliosis surgery due to their excellent biocompatibility, while allowing medical personnel to obtain undistorted magnetic resonance imaging scans following surgery.

Health-related quality of life measurement in long-term survivors and outcome following radical radiotherapy for localized prostate cancer.

Purpose: To report long-term outcomes in terms of health-related quality of life (HRQoL) and survival of a dose-escalating radiotherapy protocol and to validate a new disease-specific HRQoL instrument.

Patients And Methods: 189 consecutive men with prostate cancer were analyzed; 127 patients had T1-2 (1% T1, 66% T2) and 62 patients (33%) T3 tumors. The pelvic lymphatics were treated to a dose of 50 Gy by external-beam irradiation.

Gender typing of sports: an investigation of Metheny's classification.

The purpose of this study was to investigate if children perceived certain sports to be masculine, feminine, or neutral. Students attending a University Laboratory school (grades K-12) were asked to fill out a survey about sports during a class period, Children in grades K-6 were given a sport (such as baseball) and asked if a boy named David would play it, if a girl named Jane would play it, or if both David and Jane would play the sport. Students in grades 7-12 were asked to name their favorite athlete or team and sport and indicate what sports they felt was best for a girl and a boy.

Tuberculosis exposure of patients and staff in an outpatient hemodialysis unit.

Background: Patients receiving hemodialysis are generally considered to be at increased risk of developing tuberculosis (TB). We evaluated a 13-station chronic outpatient hemodialysis unit associated with a community hospital in northern California. Within 6 months, there were 2 incident source cases in the unit of active smear positive pulmonary tuberculosis; the first in a health care worker (HCW), diagnosed April 3, 1998, and the second in a patient undergoing dialysis treatment in October 1998.

Vertical shear injuries: is there a relationship between residual displacement and functional outcome?

Background: Residual vertical displacement is often cited as being related to poor outcome in patients with pelvic injuries. This study attempts to clarify the relationship between residual vertical displacement and functional outcome.

Methods: From 1982 to 1989, over 500 patients with pelvic ring injuries were treated at two Level I trauma centers.

Timing fracture repair in patients with severe brain injury (Glasgow Coma Scale score <9).

Background: Trauma patients with severe brain injury are at risk of secondary brain injury. Femur fractures, if present, should be repaired when potential causes of secondary brain injury have been corrected.

Methods: Sixty-one patients with severe or moderate closed head injury and femur fractures were identified.

Adult respiratory distress syndrome, pneumonia, and mortality following thoracic injury and a femoral fracture treated either with intramedullary nailing with reaming or with a plate. A comparative study.

Multiply injured patients (an Injury Severity Score of 17 points or more) who were admitted to one of two level-I regional trauma centers between 1983 and 1994 because of a fracture of the femoral shaft with a thoracic injury (an Abbreviated Injury Scale score of 2 points or more) or without a thoracic injury were studied retrospectively. The patient populations and the protocols for the treatment of trauma were similar at the two centers; however, the centers differed with regard to the technique that was used for acute stabilization of the fracture of the femoral shaft. At Center I intramedullary nailing with reaming was used in 217 (95 per cent) of the 229 patients, whereas at Center II a plate was used in 206 (92 per cent) of the 224 patients.

Ipsilateral proximal and shaft femoral fractures: spectrum of injury involving the femoral neck.

Medical records and radiographs of 52 patients were studied after inclusion/exclusion criteria were met. The anatomical location of proximal femoral fractures that involved the femoral neck were examined after the primary fracture planes were drawn onto templates of the proximal femur. The AO classification is comprehensive and widely accepted.

Pilon fractures treated with an articulated external fixator: a preliminary report.

Nine high-energy pilon fractures with severe soft tissue injuries were treated by a medial external fixator with an articulated ankle-hinge and limited internal fixation (1.7 screws per case). A 100% union rate was achieved; however, there was a 100% complication rate associated with the fixator.